Table 3
Estimated regression coefficients (log OR), standard errors (SE), odds ratios (OR), and 95% confidence intervals (CI) for smoking behaviour and occupational asbestos exposure by applying the two phase paradigm (estimation by the two phase (unconditional) logistic regression); the first model presents the simultaneous fit of categorised smoking and fibreyears, the second categorised smoking (not shown) and continuous ln(fibreyears+1)
| Two phase (unconditional) logistic regression | |||
|---|---|---|---|
| Exposure | Log OR (SE) | OR | 95% CI |
| *Smokers of cigars and pipes. | |||
| †Fibreyears, assessed by a panel of experts based on the complete questionnaire information. | |||
| Smoking | |||
| 0 to ≤20 packyears + other smokers* | 0.88 (0.54) | 2.41 | 0.84 to 6.94 |
| 20 to ≤40 packyears | 1.99 (0.48) | 7.34 | 2.86 to 18.81 |
| 40+ packyears | 2.41 (0.50) | 11.15 | 4.17 to 29.82 |
| Cumulative asbestos exposure† | |||
| 0 to ≤1 fibreyears | −0.16 (0.22) | 0.86 | 0.55 to 1.33 |
| 1 to ≤10 fibreyears | 0.29 (0.26) | 1.33 | 0.80 to 2.23 |
| 10+ fibreyears | 0.66 (0.29) | 1.94 | 1.10 to 3.43 |
| Ln (fibreyears+1) | 0.164 (0.057) | 1.178 | 1.052 to 1.318 |
